Engine.



Patetd s epf. 4, |900. L. SCHULZ. A

ENGINE.

(App-Hendon Bled Mar. 22, 1900.}

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UNITED STATES' Louis SCHULZ, on NEW ORLEANS, LoUisIANA, AssIeNoR To HERMAN` H. HUTTEN, on SAME PLACE.

PATENT OFFICE.

oF ONE-THIRD SPECIFICATION forming part of Letters Patent No. 657,458, dated September 4, 1900. Application filed March 22, 190. Serial No. 9;'752. (No model.)

.To all whom) it concern.:

Be it known that `I, LoUIs SCHULZ, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented new and useful Improvements in Engines, of which the following is a specification.- l

Myinvention relates to improvements in steam and other fluid pressure engines, and contemplates the provisionof an improved enginein which the piston and the cylinder containing the same are connected to a common crank-shaft orother element to be driven and are independently movable under the influence of steam orotherluidpressure,this being advantageous because the fluid-pressure is directly applied to the crank-shaft or other element to be driven and all of the pressure of the steam is utilized at each stroke.

Other objects and advantages of the invention will be fully understood from the following description and claims, when taken in conjunction with the accompanying drawings, in whichi Figure 1 is a view,partly.in plan and partly in horizontal section, of so much of an engine as is necessary to illustrate my invention. Fig. 2 is a view, partly in side elevation and partly in vertical section, of the same. Fig. 3 is an enlarged detail transverse section taken on the broken line 3 3 of Fig. 2.

In said drawings, similar numerals desig nate corresponding parts in all views, referring to which- 1 is an engine-bed.

14 is a shaft journaled in suitable bearings 13 and having an inner crank 12 and outer cranks 15 disposed oppositely to the crank 12.

8 8 are longitudinal guides fixed on the, bed 1. 7 is a cross-head having a base arranged and adapted tomove between the guides.

5 is a piston-cylinder, which also has a base arranged and adapted to move between the guides, and 6 is a piston contained in andadapted to move independent of the cylinder.v The rod 9 of the piston extends through a stuffing-box in the inner end of the cylinder and is connected to the cross-head 7, which in turn is connected by a rod lO with the inner crank 12 of the shaft 14, whereby it will be seen that when the piston is reciprocated depending arm 27.

a rotary motion will be imparted to the shaft.

As best shown in Fig. 1, the cylinder 5 is provided at opposite points with lateral arms 5, which are connected by rods 11 with the outer cranks 15 of the shaft 14, whereby it will be seen that reciprocatory movement of the cylinder will also serve to rotate the said shaft.

It will also be seen from .the foregoing that when the piston and cylinder are simultaneously moved in `opposite directions they will act in concert through their connections to rotate the crank-shaft.

16 is a casing disposed below the bed 1, as shown in -Figs-2 and 3, and 17 isa'valve-chest which is connectedto and movable with the cylinder 5 and extends through an elongated opening 18 in bed 1 into the casing 16, as illustrated. The interior of the valve-chest is connected with the interior of the cylinder 5, at opposite ends thereof, by ports or passages 3 3a, and the interior of the said valve-chest is also connected by an exhaust-port 3b with a slot.3c in one of the guides, which slot is in communication with the open air, as best shown in Fig. 3.

19 is a longitudinally-disposed tube fixed in the casing 16 and having its outer end connected with a source of live-steam su pply and its inner end equipped with astuiing-box or packing-gland 20,and 2.1 is a slidable tube flxedly connected to the valve-chest 17 and telescoped in the tube 19, whereby it will be seen that the movable valve-chest will be continuously supplied with steam.

22 is a slide-valve movable on a guide-rod 23 in chest 17 and designed `to control com- `munication between the interior of the chest and the ports 3 3ft and communication between said ports 3 3a and the exhaust-port 31 after 'the ordinary well-known manner, and 24 is a transverse rock-shaft journaled in the chest 17 and extending through a stuiilngbox 25, on one side wall thereof, as best shown in Fig. 3. The said shaft is provided within the chest with an upWardly-extendingarm 26, arranged in engagement with the valve 22, and is also provided at its outer end with a This latter is designed to be engagedby the upper'tappets 28 28a, ixedly connected to one side Wall 29 of the casing 16, and lower tappets 30 30a, adjustably connected to said wall 29 after the following mauner: i

When the cylinder 5 is in the position shown IOO the portion of` the cylinder in front of the` piston and the exhaust and communication` between the valve-chest and the portiono the cylinder in rear of the piston. This obviously results in the cylinder being moved in the direction indicated by the large arrow; in Fig. -2 and the piston ,being moved in the direction opposite tofthat indicated by arrow.

As the cylinder" moves inthe directionstated `z the lateral lug 27a onthe arm 27 is `engaged by the tappet28, with the result that the arm 27 is swung into anapproximately-perpendicular position and the vvalve is moved to g close both ports 33"',after which the'lug 27L i moves under the tappet 28 and the arm 27 remains in its perpendicularposition until the When. i' the arm 27 is engaged bythe tappet 30, as stated, the valve -22 is moved into Va position to eiect communication between the interior 'arm 27 is engaged b y the tappet 301.

of the valve-chest and the port 3 and commu-A withthe result that the piston -is lmoved in the direction indicated by arrow in Fig. 2

and the cylinder in the direction oppositeltov that indicated byarrow. When the cylinder is vmoved in the direction opposite to that? indicated by arrow in Fig. 2, the lug 27, of arm 27 is 'first engaged by the tappet 28 to move the arm into a perpendicular position, and said arm' 27is then engaged by the tappet 30, when the operation described isf're-k. peated. When it is desired to regulate the throw of the valve, the same may be readily accomplished by adjusting the `tappets "3030a e in the slotsef the casngwall 29. a

- employed is directly Aand continuouslyapplied to the crank-shaft and the full pres? sure of the steam is utilizedat each stroke.,` with the resultthat a high speed lcan be attained.

It will also be observed that the engine is simple and. inexpensive in construction and embodies no frail parts,1such as are 5 likely to` get out of order after a short periodv of use. 4 t

Having thus described my invention, what I claim is i 1. In the fluid-pressure 'enginel described,

'the combination ofthe casing, the bed arl ranged above the casing and having a yslot in-l communication therewith, and also'havingra guide, and shaft journaled in suitable bearings, and having oppositely-disposedcranks, a lcylinder movable on the bed in the guide thereof, a cross-head also y,movable l'in the` guide,- drivingconnections between -rthe cyl# i-nder and Vcross-head and the cranks-ofthe shafft, apiston arranged in andmovable in?i ,depend'ent'of thecylinder, `and having a rod connectedjto the cross-head, a valve-'chestf movable with the cylinder, and extending! Witnesses:

through the'slot in theM bed into the casing; said chest being connected by ports with the interior of the cylinder at theopposite ends thereof, and also connectedby an exhaustportwith the atmosphere, 'suitable means for connecting the vvalve-chest with a source of fluid-pressure, a slide-valve, arranged in the chest, a rock-shaft journaled in the chest, and I ,having an arm within the chest arranged in engagement with the valve and also having an arm without the chest, and the upper and lower tappetscontained in the casing, and arranged in the pathof and adapted to engage the outer arm of the rock-shaft.

2. In a fluid-pressureengine,V the. combination of an Aelement nto be driven, a cylinder movable-toward and from the element .to beV driven, va pistonarranged in and movable independent of the cylinder, drivingV connec- 'tionsbetween the cylinder `-and piston and thel element to bekdriven, a valve-chest movable Awith the cylinder and connected byuprts with the interior Aof the cylinder at opposite E endsthereof and alsoconnected by an exnication between the port 3 and the exhaust,

'haust -port `,with the atmosphere, suitable 'means for connectingV the valve-chest with a source of Huid-pressure supply, a slide-valve arranged'in the chest, a rock-shaft journaled in `the'chestand `having an arm within the chest arranged in engagement with the valve and also :having anl arm without the chest, and the upper tappets and lower tappets arranged in the path of and adapted to engage the outerarm of the rock-shaft, substantially as specified.` j,

8. `In a Huid-pressure engine, the combination with an element to be driven, a cylinder movable toward andfrom the element to be Vdriven,`a piston arranged in and movable in- It follows fromV the foregoing th'atthe pressure of\the steam or other expansible tluid dependent of .the cylinder, ydriving connections between the Aeylinderand piston and the element to be driven, a valve-chest mov# able ywith the'cylinder and connected by ports with the interior of 'the cylinderat opposite endsxthereof and alsoconnected by an exhaust-port with theatmosphere, a fixed tube adapted yto be` connected with a source of fluid-pressure supply, a pipe 'connected 4to the valve-chest and telescoped in"`said fixed tube,

a slide-valve arranged in the chest, a rockshaft journaled in the chest and .having an arm within the'ches't arranged in engagement with the valve and also having an arm without the chest, and the upper tappets and lower tappets arranged inthe path of andadapted to engage 'the outer arm ofthe rock-shaft, the Jlowertappe'ts being adjustable, substantially as specified.A l v In testimony whereof I have hereunto set myh'and in presence of two subscribing witnesses.

" Louis SCHULZ.`

-HERRMANN HUBERT HUr'rEN,

IOO

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